Patents by Inventor Michitaka Okuta

Michitaka Okuta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Element for optical isolator and optical isolator employing the same, together with semiconductor laser module employing the optical isolator element
    Patent number: 5402260
    Abstract: An element for an optical isolator which is formed by alternately bonding together at least one flat plate-shaped Faraday rotator and two or more flat plate-shaped polarizers, the optical isolator element having an outer peripheral surface which is cut such that, when the outer peripheral surface is disposed parallel to an optical axis, incidence and emergence planes of the element are inclined at a predetermined angle with respect to a plane perpendicular to the optical axis. The optical isolator element may be formed with a rectangular configuration in conformity to the arranged form of a plurality of laser active regions of a laser array.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: March 28, 1995
    Assignee: Kyocera Corporation
    Inventors: Yukiko Tsuneda, Michitaka Okuta, Yasushi Sato